Water-heater.



F. G. DAMM.

WATER HEATER. APPLICATION FILED JUNE 17, 1907.

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WATER HEATER- APPLmATIoN FILED JUNE 17, 1907.

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UNITED STATESPATENT GHEEQE.

FREDERICK O. DAMM,O FST. LOUIS, MISSOURI.

WATER-HEATER.

Specification of Letters Patent.

Patented May 11, 1909.

' Application filed June 17, 190"]. Serial No. 379,512.

This invention relates to a novel construo-' tion of device for use in heating water, and is especially directed to that type of apparatus in which a flowing stream of water is heated during its passage through the apparatus, as distinguished from heaters in which a stationary body of water is heated and then removed from the heater.

The invention aims to provide a construction by means of which the water coursing through the heater will be subjected to a large area of heating surface, resulting in the heating of a given quantity of water in a given time to a higher temperature than is possible with any other form of water heater of which I am aware.

The invention also. aims to provide a novel arrangement and operation of the burner in connection with the heating space of the heater, whereby danger from explosion due to escape of gas, before ignition thereof, is

prevented, or, atleast, greatly minimized, 1 and a continuous passage from the burner tip through the heating space is provided.

The invention consists the novel construction, arrangement and operation of parts, all as hereinafter fully described in detail, and claims. 7 v

In the drawings, forming a part of'this specification, and in which similar numerals of reference indicate corresponding parts in the several views, Figure 1 Isa view 1n elevation showing the application of my im-' the line 3-3 of Fig. 2, and viewed in the direction of the arrows.

Referringnow to these drawings l indicates a boiler of the ordinary type used in dwelling housespto which water is supplied to be heated through a pipe 2.

3 indicates a pipe leading from the bottom of the boiler 1 for conveying water therefrom to the heater 4, and 5 indicates a pipe leading particularly pointed out in the r through ports 19.

the chamber 16.

with the interior of the latter.

from said heater back to the boiler through the top thereof. a

6 indicates a pipe through which hot water is drawnfrom the boiler 1.

a 7 indicates a chimney or flue for carryin off the products of combustion from the heater 4. i

The general organizationof the parts just described would-not differ materially from that which would be found in connection with other forms of heaters, and is referred to in order to illustrate one of the applications of-my heater, so that the'operation thereof may be clearly understood. I now pass to the description of the heater proper. The body of said heater, as shown in the several views, is substantially globe-shaped, and, as indicated in Figs. 2 and 3, is formed in three main parts, via, an upper hemispherical part 8, a lower hemi-spherical part 9, and a hollow drum 10. The parts 8 and 9 constitute a water-jacket surrounding a the drum 10, each comprising an inner wall 11 and an outerwall 12, said walls affording between them a space 13 for the passage of water. The walls 11 and 12 of the part 8 are connected to, or formed integral with, a head 14, and the passage 13 in said part communicates' through ports 15 with a chamber 16 in said head, from which leads the outlet pipe 5 for the water from the heater. The walls 11 and 12 of the lower part 9 of the heater are secured to, or formed into ml with, a head 17, and the space 13 of sai lower part communicates with a chamber 18 in said head The head 14 h as an interior projecting portion 20, in which-is located Screwed through the bottom of this projection 20, and communicat ing withthe chamber 16, is a pipe 21, the lower end of which is screwed through the upper end of the drum 10, and communicates with the interior of the latter. The head 17 is provided with an interior upwardly-projecting portion 22 in which is located the chamber 18. Screwed through the upper portion of the projection 22, and com1nunieating with the chamber 18, is a ipe 23, the upper end of which is screwed t irough the bottom of the drum 10 and communicates It will thus be seen that the two members 8 and 9 of the heater are su ported from, and in fixed relation to, the rum 10 by means of the screwthreaded pipes 21 and 23.

The opposing faces of the two members 8 and 9 are maintained a slight distance apart, as indicated at 24, to allow for expansion under ction of heat. A metal band 25 surrounds the heater, closing the space 2 1, to

the outer air to prevent the escape of the products of combustion from the heater through this space. The passage 13 of the two parts 8 and 9 communicate at one side of the apparatus through the medium of a bent pipe 26, which arches the space 24 between the two parts of the heater, and has its opposite ends inserted in nipples 27, cast on the respective members 8 and 9. It will thus be seen that water can flow freely from the space 13 of the part 9 to the space 13 of the part 3 through the pipe 26. The pipe 3 leading from the bottom of the boiler 1 has a vertical extension, as shown in Fig. 1, the upper end of which is screwed through the bottom of the head 17, and communicates with the chamber 18. Thus water passing through the pipe 3 enters the chamber 18, and part of this water will pass through the pipe 23 into the drum 10, thence, through the pipe 21 into the chamber 16, and through the pipe 5 back to the boiler. A. portion of the water may also pass into the space 13 of the lower member 9, thence through pipe 26, into the space 13 of the upper member 8, thence into the chamber 16 and through the pipe 5. Mounted on the pipe 3 is a two-armed bracket 28, each of said arms affording at its outer end a bearing 29 for a gas pipe 30, having a semi-circular portion 31, partially surrounding the pipe 3, as well to clear said pipe 3 as to permit a rocking movement of pipe 30, as hereinafter described.

32 indicates a gas supply pipe which is connected with one end of the pipe 30, the supply of gas therethrough being controlled by a hand-valve 33. The opposite end of the pipe 30 is closed and has secured thereon a lever 34. Extending upward from the pipe 30 on opposite sides of the pipe 3 are jetpipes 35, which enter, and have supported thereon, the lower ends of tubes 36, the support at the lower ends of said tubes being open, or in the form of a spider, the connection of said tubes with the j et-pipes 35 form ing a species of Bunsen burner.

37 indicates cooks for controlling the flow of gas through. the jet-pipes. The head 17 is provided on its interior with a chamber 38, partially surrounding the projection and said chamber is provided in its bottom on opposite sides of the pipe 3 with apertures 39. These apertures in the normal opera tion of the apparatus are covered by the ends of the tubes 36, so that there is a continuous passage provided from said tubes through the chamber 38. The head 14 has a chamber 40, similar to the chamber 38, and the to of said chamber is provided on opposite si es with two apertures 41, which are covered by the chimney or flue '7, the lower end of which is fitted to the head 14. The inner walls of the members 8 and f) of the heater are located at some distance from the wall of the drum 10, thereby providing a substantially, spherical, annular space 12, which communicates, respectively, with the chamber 38 of the head 17 and the chamber -10 of the head 1 1. It will thus be soon that the heat and products of combustion from tho jet-pipes and tubes 36, constituting the burncrs, will have free course through the head 17, annular space 42, head 14 and l'luc 7.

In all of the heaters with which l am acquainted, it is possible upon opening the cocks to the burners for a considcrablc amount of gas to escape into the heater before ignition, and after the match is applied to light the burner this body of gas may ignite and explode. My invention, by the construction of burner described. aims to provide a means for minimizing this danger. To this end, when the burners arc to be uscd the attendant grasps the lever 34, and throws it over to one side, as shown in. Fig. 3, thereby drawing the tubes 36 to one side of the head 17. The cocks 37 are then turned to admit gas to the tubes 36, and the gas is ignited at the upper ends of these tubes, any gas passing through the tubes before the match is applied escaping to the outer air. After firing, the lever 34 is then turned back to its former position bringing the upper ends of the tubes 36 directly under the open ings 39, so that the flame, heat and products of combustion will pass upward through the chamber 38 into the annular space 12.

It will be seen from the operation of the device which has been outlined during the foregoing description, that the llame and heat from the burners pass between two bodies of water, one in the drum 10, and the other in. the annular space 13 of the parts 8 and 9 of the heater. By this means the maximum amount of heat is utilized, or, in other words, a large surface is exposed to the action of the heat resulting in the rapid heating of a large amount of water, in a comparatively short time. By actual comparative tests with one of the best known standard water heaters now on the market, I have demonstrated that with my construction of heater a larger amount of water can be heated to a given. temperature much more rapidly than was possible in the use of the apparatus with which comparison was made.

I claim 2* 1. A water heater comprising an inner drum and an outer jacket surrounding the drum at a distance therefrom and affording thereby a heating space between the ackct and drum, said jacket having on opposite sides heads aiTording chambers, the jacket and drum connnunicating with said chambers, one of said chambers having a water ill) supply port, and the other a water outlet port, and a burner communicating with said heating space.

2. A water heater comprising an inner drum and an outer jacket surrounding the drum at a distance therefrom, said jacket comprising two independent hemi-spherical members normally separated at their opposing faces, one of said members and the drum communicating at one point in the apparatus with a common water supply port, and the other of said members and said drum communicating at another point in the apparatus with a common water outlet port, a conduit connecting the spaces in said hemi-spherical members, and burners communicating with the space intermediate said drum and jacket. 3. A water heater comprising an inner drum, a jacket surrounding said drum at a distance therefrom, heads connected to said jacket at opposite sides of the apparatus, each of which is provided with an inner and an outer chamber, a water supply pipe communicating with one of said inner chambers, means connecting said drum at opposite sides with said heads and affording communication between said drum and said respective inner chambers, the space intermediate the drum and jacket communicating with said respective outer chambers, and burners communicating with one of said outer chambers, the other of said outer chambers having outlets. I

i. In combination with a water heater affording a heating space and provided with ports opening into the same, a burner comprising tubes adapted to cover said ports at their outer end, said tubes being movable into and out of communication with said ports, to form with said space a continuous passage.

5. In combination with a water heater affording a passage for the heat and a separate passage for the water, a water supply pipe connected to said apparatus and communicating with the water passage, a gas-supply pipe having a member pivotally supported from said water supply pipe, burners mounted on said member and communicating with the said passage for heat, said pivoted portion of t e gas-supply pipe being movable to bring said burners into and out of communication with said heating passage.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- IIGSSBS.

FREDERICK C. DAMM. Witnesses:

BRUoE S. ELLIOTT, 01mm 00mm. 

